PHYSICS , Energy Flashcards
what is the conservation of energy?
Energy cannot be created or destroyed, energy can only be transferred from one form to another.
What is energy?
The ability to do work.
What are 5 energy stores?
Kinetic, gravitational potential, thermal, chemical, electrostatic.
In what ways can energy be transferred?
Mechanical work, electrical work, heating, and radiation.
What is kinetic energy?
The movement energy of an object.
What is gravitational potential energy?
The energy stored in an object when it is lifted above ground.
Whats the equation for kinetic energy?
0.5 x mass x m/s
What is Elastic potential energy?
Energy is stored in stretched material.
What is the equation for Elastic Potential Energy?
0.5 x n/m x m2
What is the equation for gravitational potential energy?
kg x kg/n x height
What is the unit for energy?
(J) Joules
What does it mean by “work is done”?
Energy being transferred.
What is works equation?
J = Force ( N ) x Distance ( M )
What is power?
Rate of transfer energy
What is the equation for power?
Watts (W) = work done (J) / time (S)
